A) a chameleon changing colors as it moves from a leaf of one color to a leaf of another color.
B) increased resistance of bacteria to an antibiotic that is used to kill them.
C) chimpanzees learning sign language.
D) humans teaching dogs to obey certain commands.

A) continental drift
B) natural selection
C) weather
D) mutation

A) 0.1
B) 0.3
C) 0.5
D) 0.7